Carcinologioal Fauna of India. 293 



110. Raninoides personatus, White, Henderson. 

 Raninoides personatus, White MS., Henderson ' Challenger' Anomurap. 27 pi. ii. 

 fig. 5. 



Carapace twice as long as broad. The lateral border in its posterior 

 half is defined by a fine raised and milled line, and at either external 

 orbital angle is prolonged into a spine, at a distance behind which 

 equal to the distance between it and the rostrum is a second smaller, 

 but still large, spine. The carapace between the two latter spines is 

 finely punctate and in places granular, elsewhere it is smooth and 

 polished. 



The front consists of three teeth, the middle one of which alone 

 is large and prominent forming the true rostrum, the lateral teeth 

 beino- small : between each of these small lateral teeth and the external 

 orbital spine, and separated from both by a fissure, is an angular lobo 

 that completes the roof of the orbit. The whole fronto-orbital border 

 is hairy. The pterygostomian regions are densely granular in a well 

 defined band that occupies much more than their outer half. 



The chelipeds have the ischium armed distally, on its inner border 

 with a sharp slender spine : two similar spines occur towards the distal 

 end of the carpus — the larger one being on the outer border, the 

 smaller on the dorsal surface : a similar spine is found towards the 

 far end of the outer border of the hand, and three occur along the 

 inner border of the hand : the dactylus has a smooth cutting edge, 

 but the opposed edge of the immobile finger is very sharply laciniate 

 up to a sharp terminal spine. There is no spine on the outer edge of 

 the dactylus. The third pair of true legs has its merus on both edges 

 and the other joints on the posterior edge fringed with long stiff hairs, 

 the second pair has similar hairs on the posterior edge of merus carpus 

 and propodite, the first pair on lower edge of propodite. 



Excluding the filiform last pair, (he other legs have the carpus 

 dorsally carinate, and the propodite and dactylus foliaceous. 



In the Indian Museum collection are numerous specimens from the 

 coasts of the Bay of Bengal, from 12 to 70 fathoms. 



111. Raninoides serr at if rons, Henderson. 



Raninoides serratifrons, Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, p. 

 408, pi. xxxviii. figs. 10-12. 



Differs from R. personatus Henderson in the following particulars: — 



(1) the rostrum is cariuated, and it, as well as the dentiform lobe 

 at either side of its base, has the edge sharply clearly and uniformly 



serrated : 



(2) between the dentiform lobe at the base of the rostrum and the 



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